Patterned Polypeptoid Brushes

Area of Science:

• Polymer Chemistry
• Surface Science
• Biomaterials

Background:

• Biofouling presents challenges in various applications, including medical devices and sensors.
• Developing surfaces resistant to biofouling is crucial for improving device performance and longevity.
• Polypeptoid brushes offer tunable properties for surface modification.

Purpose of the Study:

• To synthesize patterned polypeptoid brushes on gold and oxide substrates.
• To evaluate the biofouling resistance of these polypeptoid brushes.
• To demonstrate the compatibility of polypeptoid brushes with common patterning techniques and their chemical accessibility for further functionalization.

Main Methods:

• Surface-initiated polymerization of N-substituted glycine N-carboxyanhydrides to create polypeptoid brushes.
• Protein and cell adhesion experiments to assess biofouling resistance.
• UV-lithography and microcontact printing (μCP) for patterning.
• Functionalization of terminal amine groups with fluorescent dyes.

Main Results:

• Successful synthesis of patterned polypeptoid brushes on gold and oxide surfaces.
• Demonstrated significant resistance to protein and cell adhesion, indicating excellent biofouling resistance.
• Confirmed compatibility with UV-lithography and μCP patterning methods.
• Successfully functionalized the polypeptoid brushes with fluorescent dyes, showcasing chemical accessibility.

Conclusions:

• Patterned polypeptoid brushes provide a robust platform for creating biofouling-resistant surfaces.
• The synthesis method and patterning techniques are versatile and applicable to various substrates.
• The chemical accessibility allows for further customization and integration into complex systems.